The editors of this important source edition show that it was not Hitler’s obsession, or the radical hubris of his SS entourage, or the interests of German industry, or the German population’s widely shared antisemitism singularly that led to the destruction of millions of Jews. On the contrary, it was a fatal mixture of all these factors together. A variety of sources illustrates the deep involvement of German society as well as Jewish life and death under Nazi rule. The editors stress that although the Holocaust was a German project in all its stages, it was not conducted without help from outside.